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[3.13] gh-127065: Make methodcaller thread-safe in free threading build (GH-127109) - #127150
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…ild (pythonGH-127109) The `methodcaller` C vectorcall implementation uses an arguments array that is shared across calls. The first argument is modified on every invocation. This isn't thread-safe in the free threading build. I think it's also not safe in general, but for now just disable it in the free threading build. (cherry picked from commit f83ca69) Co-authored-by: Sam Gross <colesbury@gmail.com>
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The methodcaller C vectorcall implementation uses an arguments array
that is shared across calls. The first argument is modified on every
invocation. This isn't thread-safe in the free threading build. I think
it's also not safe in general, but for now just disable it in the free
threading build.
(cherry picked from commit f83ca69)
Co-authored-by: Sam Gross colesbury@gmail.com